Why and how is mass an extensive property?

Hydrocyanic acid (HCN) is a strong acid. In a water solution of this acid, which of the following would you expect to find more of

The table shows the thermodynamic data for a reaction. Thermodynamic Data Energy of the Reactants Energy of the Products Activation Energy 160 kJ 370 kJ 260 kJ Which of the following statements explains if the reaction is endothermic or exothermic?

The radii of the sodium and potassium ions are 102 pm and 138 pin. respectively. Which compound has stronger ionic attractions, sodium chloride or potassium chloride?

A blank emission results in the release of energy without any apparent change in mass or nuclear charges

A gas occupies 12.2 liters at 0.8 atm. What is the pressure if the volume becomes 15.6 L?

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?

Label the molecular shape around each of the central atoms in the amino acid glycine. hint

Which has more atoms, 2moles of carbon or 2 moles of aluminum

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?